(R)-(+)-1,1'-Bi-2-naphthol, ≥99.5%

Catalog No. 717326

Identification

Synonyms	(R)-(+)-1,1′-Bi(2-naphthol)
CAS No.	18531-94-7
M.F.	C₂₀H₁₄O₂
M.W.	286.32
Beilstein No.	3616837
MDL No.	MFCD00004068
PubChem Substance ID	24854837

Technical Data

Appearance	White crystalline powder
Melting Point (°C)	208-211℃
Specific Rotation (°)	+34°±0.5°(C=1 in THF)
E.E.	≥99.5% HPLC
Assay	≥99.5%
Storage	Cool & Dry
Application	A chiral auxiliary used in the catalytic asymmetric oxidation of sulfides to sulfoxides. Chiral lanthanide triflates formed from binaphthol serve as catalysts for asymmetric Diels-Alder reactions. Derivatives of binaphthol have recently found use in asymmetric Claisen rearrangements and asymmetric epoxidations. The lithium aluminum hydride derivative of these diols (BINAP-H) has been used extensively for the reduction of ketones.

Safety Data

Symbol	GHS06
Hazard Statements	H301-H319
Precautionary Statements	P301 + P310-P305 + P351 + P338
Hazard Symbols	T
Risk Statements	R25-36
Safety Statements	S26-45
WGK Germany	3
RTECS	DU3106100

Reference

J. Org. Chem. 58, 4529, (1993) S. Kobayashi et al. Tetrahedron 50, 11623, (1994) Hattori, K. Yamamoto, H. Synlett, 129, (1993) Maruoka, K. et al. J. Am. Chem. Soc. 117, 1165, (1995) Sasaki, H. et al. Synlett, 300, (1993) Noyori, R. et al. J. Am. Chem. Soc. 106, 6709, 6717, (1984)

(R)-(+)-1,1'-Bi-2-naphthol, ≥99.5%

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